package com.atguigu.gulimall.auth.controller;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.AuthServerConstant;
import com.atguigu.common.exception.BizCodeEnume;
import com.atguigu.common.utils.R;
import com.atguigu.common.vo.MemberRespVo;
import com.atguigu.gulimall.auth.feign.MemberFeignService;
import com.atguigu.gulimall.auth.feign.ThirdPartFeignService;
import com.atguigu.gulimall.auth.utils.RandomUtil;
import com.atguigu.gulimall.auth.vo.UserLoginVo;
import com.atguigu.gulimall.auth.vo.UserRegistVo;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpSession;
import javax.validation.Valid;
import javax.validation.constraints.NotEmpty;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;
import java.util.stream.Stream;

@Controller
public class IndexController {

//    @GetMapping("/login.html")
//    public String login(){
//        return "login";
//    }
//    @GetMapping("/reg.html")
//    public String reg(){
//        return "reg";
//    }
    @Autowired
    private ThirdPartFeignService thirdPartFeignService;
    @Autowired
    private StringRedisTemplate redisTemplate;
    @Autowired
    private MemberFeignService memberFeignService;
    @GetMapping("/login.html")
    public String loginPage(HttpSession session){
        Object attribute = session.getAttribute(AuthServerConstant.LOGIN_USER);
        if (attribute == null){
            return "login";
        }else {
            return "redirect:http://gulimall.com";
        }


    }
    @PostMapping("/sms/sendcode")
    @ResponseBody
    public R sendCode(@RequestParam("phone") String phone){
        //todo 1、接口防刷


        //2、验证码二次校验。redis key:phone value:code
        //redis 缓存验证码 防止同一个手机号60内再次发送验证码
        String redisCode = redisTemplate.opsForValue()
                .get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + phone);
        if (!StringUtils.isEmpty(redisCode)){
            long sendDate = Long.parseLong(redisCode.split("_")[1]);
            if (System.currentTimeMillis() - sendDate < 60*1000){
                //60秒内 不能再发送
                return R.error(BizCodeEnume.VAILD_SMS_CODE_EXCEPTION.getCode(),
                        BizCodeEnume.VAILD_SMS_CODE_EXCEPTION.getMsg());
            }
        }

        String code = RandomUtil.getSixBitRandom();
        String saveCode = code+"_"+System.currentTimeMillis();
        redisTemplate.opsForValue()
                .set(AuthServerConstant.SMS_CODE_CACHE_PREFIX+phone,
                        code,
                        5,
                        TimeUnit.MINUTES);
        thirdPartFeignService.sendCode(phone, code);
        return R.ok();
    }

    @PostMapping("/regist")
    public String register(@Valid UserRegistVo vo, BindingResult result, RedirectAttributes redirectAttributes){

        if(result.hasErrors()){

            // 将错误属性与错误信息一一封装
            Map<String,String> errors = new HashMap<>();
            for (FieldError fieldError : result.getFieldErrors()) {
                errors.put(fieldError.getField(),fieldError.getDefaultMessage());
            }
            // addFlashAttribute 这个数据只取一次
            redirectAttributes.addFlashAttribute("errors", errors);
            return "redirect:http://auth.gulimall.com/reg.html";
        }
        //1、注册成功回到登录页
        String code = vo.getCode();
        String redisCode = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + vo.getPhone());
        if (!StringUtils.isEmpty(redisCode)){
            redisCode = redisCode.split("_")[0];
            if (code.equals(redisCode)){
                //验证码通过
                //删除验证码
                redisTemplate.delete(AuthServerConstant.SMS_CODE_CACHE_PREFIX + vo.getPhone());
                //远程调用
                R r = memberFeignService.regist(vo);
                if (r.getCode()==0) {
                    //成功
                    return "redirect:http://auth.gulimall.com/login.html";
                }else {
                    Map<String,String> errors = new HashMap<>();
                    errors.put("msg",r.getData("msg",new TypeReference<String>(){}));
                    redirectAttributes.addFlashAttribute("error",errors);
                    return "redirect:http://auth.gulimall.com/reg.html";
                }

            }else {
                Map<String,String> errors = new HashMap<>();
                errors.put("code","验证码错误");
                redirectAttributes.addFlashAttribute("errors", errors);
                return "redirect:http://auth.gulimall.com/reg.html";
            }
        }else {
            Map<String,String> errors = new HashMap<>();
            errors.put("code","验证码错误");
            redirectAttributes.addFlashAttribute("errors", errors);
            return "redirect:http://auth.gulimall.com/reg.html";
        }

    }

    @PostMapping("/login")
    public String login(UserLoginVo vo, RedirectAttributes redirectAttributes, HttpSession session){

        R login = memberFeignService.login(vo);
        if (login.getCode()==0){
            MemberRespVo data = login.getData("data", new TypeReference<MemberRespVo>() {
            });
            session.setAttribute(AuthServerConstant.LOGIN_USER,data);
            return "redirect:http://gulimall.com";
        }else {
            Map<String,String> errors = new HashMap<>();
            errors.put("msg",login.getData("msg",new TypeReference<String>(){}));

            redirectAttributes.addFlashAttribute("errors",errors);
            return "redirect:http://auth.gulimall.com/login.html";
        }

    }
}
